爬取知乎搜索热榜

import requests
from lxml import etree
import re
import pandas as pd
import os
url='https://tophub.today/n/mproPpoq6O'
header={'User-Agent':""}
def get(url):
    try:
        data=requests.get(url,timeout=30)
        data.raise_for_status()
        data.encoding=data.apparent_encoding
        return data.text
    except:
        return'无法爬取'
def main():
    print('知乎今日搜索热榜（以及热度）')
    data=etree.HTML(requests.get(url,headers=header).text)
    math=data.xpath('//td[@align="center"]/text()')
    title=data.xpath('//td[@class="al"]/a/text()')
    read = data.xpath('//td[3]/text()')
    for i in range(0,10):
        print("{0:<1}\t{1:{3}<1}\t{2:{3}>30}".format(math[i],title[i],read[i],chr(12288)))
get(url)
main()